Home / 21,220.83-31,820.31-14,567.49

Finding the Fourth Proportional to 21,220.83, 31,820.31 and 14,567.49

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Solution

The fourth proportional to 21,220.83, 31,820.31 and 14,567.49 is: 21,843.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.83 : 31,820.31 = 14,567.49 : x
  2. Step 2: Convert to fraction form
    21,220.83/31,820.31 = 14,567.49/x
  3. Step 3: Cross multiply
    21,220.83x = 31,820.31 × 14,567.49
  4. Step 4: Simplify right side
    21,220.83x = 463,542,047.72
  5. Step 5: Solve for x
    x = 463,542,047.72/21,220.83
  6. Step 6: Final answer
    x = 21,843.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.